Mechanics Puzzle

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Across
  1. 1. In machines, the ______ efficiency is usually less than the ideal.
  2. 5. _____ arm is the distance from the fulcrum to the force.
  3. 8. _______cylinders are used to produce very large forces.
  4. 9. work out/work in
  5. 12. The result of force out / force in is _________ advantage.
  6. 14. Force due to gravity
  7. 18. Stored up energy capable of doing work is ______ energy.
  8. 19. force/area
  9. 20. machines Machines that have no power supply, like levers, pulleys, inclined planes, etc.
Down
  1. 2. Heat waste is ______ pollution.
  2. 3. When anti-matter and matter meet, they produce _________.
  3. 4. Energy of speed is ______ energy.
  4. 6. Usually a machine is designed to give more _____ out than you put in.
  5. 7. The more massive an object, the more it resists ___________.
  6. 10. distance in/distance out
  7. 11. Hydrolic cylinders are run by pressure on a _____.
  8. 13. The meaning of HP in mechanics
  9. 15. The point on which a lever rests or is supported and on which it pivots.
  10. 16. The system of measurement used worldwide.
  11. 17. Mass plus energy is constant because of ________'s law.
  12. 21. _____ mechanical advantage is when the distance in is equal to the distance out.